Counting mechanism for line sectionalizers



A. W EDWARDS ET AL cOUNTNG MEcHANSM FOR LNE SECTONALzERS 2 Sheets-Sheet 1 |NVENTORS Andrew w. Edwords qnd ATTORNEY by a predetermined overcurrent in the coil; a n10vable countern1en1ber biased toward an inoperative position; a one-Way driven1echanism activated by the armature to ilnpart one step of a Stepby-step advance to said c0unter1enbe1` each tine said armature moves to itS overcurrent position; a h01dingdetent operable to hold Said counter-Inenlber in advanced positions; Separable contacts; a resp0nSe-Inen1ber for actuating one of said contacts, said response Inelnber being biased toward a responding position; a latch nor- Inally holding said resp0nse-IneInber frorn 1-e- Sponding; 1Tleans actuated by the counternle1nber at the terInination of its predeterInined Stepby-step advance to release Said1atch; and means actuated by the arnature i!1its 0vercurrent position to interpose a temporary block against any substantialn10veTnent of the response...rnernber in its responding direction 13. In aa Sectiona1izing switch, a casing, Separable contacts in said casing biased to Separae, releasable nleans holding said contacts c10sed, aa Inovable counter n1enber advanceable from an initial position to release said releasable !neans, a handle projecting from said casing actuable to advance said counter nlelnber, electron1agnetic 1 Ineans having 8' part n0vab1e in response to a( predetern1jned current condition, 3 one-Way drive inechanisn1 Cuaed by he n10vable part to advnce he 0Dunter n1enbe1' one sep neans Ope1ae ho retain he Counte1` Tlenbe1' in an Clvanced pOSiion fo1' a predeterrnine(i tn1e, lneans actuated by the cOuner menber in re- Sponse to predetef1nined advance thereof greater than S9d one Step to release the 1eleasable 1T1eans, and an additiona1 hand1e projecting f`OT1 the casing acuab1e to rec10se said Gontacts' Nun1ber Name Date l,728,983 Sampson sept. 2, 1929 2,298,143 May oct 6 192 2,333,60 Wa1lace Nov( 2, 1943 2,387,372 watkins et al Oct. 23, 1945 2 4 786 Lincks et a1 Jan. 21 197 2,42,77 vva1lace et al june 1, 1948 2,452,233 Gerard et al Oct. 26, 198 2 548,079 '*h0npson et al. Apr 10 1951 

